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Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females

BACKGROUND: The activPAL has been identified as an accurate and reliable measure of sedentary behaviour. However, only limited information is available on the accuracy of the activPAL activity count function as a measure of physical activity, while no unit calibration of the activPAL has been comple...

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Autores principales: Dowd, Kieran P., Harrington, Deirdre M., Donnelly, Alan E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477132/
https://www.ncbi.nlm.nih.gov/pubmed/23094069
http://dx.doi.org/10.1371/journal.pone.0047633
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author Dowd, Kieran P.
Harrington, Deirdre M.
Donnelly, Alan E.
author_facet Dowd, Kieran P.
Harrington, Deirdre M.
Donnelly, Alan E.
author_sort Dowd, Kieran P.
collection PubMed
description BACKGROUND: The activPAL has been identified as an accurate and reliable measure of sedentary behaviour. However, only limited information is available on the accuracy of the activPAL activity count function as a measure of physical activity, while no unit calibration of the activPAL has been completed to date. This study aimed to investigate the criterion validity of the activPAL, examine the concurrent validity of the activPAL, and perform and validate a value calibration of the activPAL in an adolescent female population. The performance of the activPAL in estimating posture was also compared with sedentary thresholds used with the ActiGraph accelerometer. METHODOLOGIES: Thirty adolescent females (15 developmental; 15 cross-validation) aged 15–18 years performed 5 activities while wearing the activPAL, ActiGraph GT3X, and the Cosmed K4B2. A random coefficient statistics model examined the relationship between metabolic equivalent (MET) values and activPAL counts. Receiver operating characteristic analysis was used to determine activity thresholds and for cross-validation. The random coefficient statistics model showed a concordance correlation coefficient of 0.93 (standard error of the estimate = 1.13). An optimal moderate threshold of 2997 was determined using mixed regression, while an optimal vigorous threshold of 8229 was determined using receiver operating statistics. The activPAL count function demonstrated very high concurrent validity (r = 0.96, p<0.01) with the ActiGraph count function. Levels of agreement for sitting, standing, and stepping between direct observation and the activPAL and ActiGraph were 100%, 98.1%, 99.2% and 100%, 0%, 100%, respectively. CONCLUSIONS: These findings suggest that the activPAL is a valid, objective measurement tool that can be used for both the measurement of physical activity and sedentary behaviours in an adolescent female population.
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spelling pubmed-34771322012-10-23 Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females Dowd, Kieran P. Harrington, Deirdre M. Donnelly, Alan E. PLoS One Research Article BACKGROUND: The activPAL has been identified as an accurate and reliable measure of sedentary behaviour. However, only limited information is available on the accuracy of the activPAL activity count function as a measure of physical activity, while no unit calibration of the activPAL has been completed to date. This study aimed to investigate the criterion validity of the activPAL, examine the concurrent validity of the activPAL, and perform and validate a value calibration of the activPAL in an adolescent female population. The performance of the activPAL in estimating posture was also compared with sedentary thresholds used with the ActiGraph accelerometer. METHODOLOGIES: Thirty adolescent females (15 developmental; 15 cross-validation) aged 15–18 years performed 5 activities while wearing the activPAL, ActiGraph GT3X, and the Cosmed K4B2. A random coefficient statistics model examined the relationship between metabolic equivalent (MET) values and activPAL counts. Receiver operating characteristic analysis was used to determine activity thresholds and for cross-validation. The random coefficient statistics model showed a concordance correlation coefficient of 0.93 (standard error of the estimate = 1.13). An optimal moderate threshold of 2997 was determined using mixed regression, while an optimal vigorous threshold of 8229 was determined using receiver operating statistics. The activPAL count function demonstrated very high concurrent validity (r = 0.96, p<0.01) with the ActiGraph count function. Levels of agreement for sitting, standing, and stepping between direct observation and the activPAL and ActiGraph were 100%, 98.1%, 99.2% and 100%, 0%, 100%, respectively. CONCLUSIONS: These findings suggest that the activPAL is a valid, objective measurement tool that can be used for both the measurement of physical activity and sedentary behaviours in an adolescent female population. Public Library of Science 2012-10-19 /pmc/articles/PMC3477132/ /pubmed/23094069 http://dx.doi.org/10.1371/journal.pone.0047633 Text en © 2012 Dowd et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Dowd, Kieran P.
Harrington, Deirdre M.
Donnelly, Alan E.
Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females
title Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females
title_full Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females
title_fullStr Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females
title_full_unstemmed Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females
title_short Criterion and Concurrent Validity of the activPAL™ Professional Physical Activity Monitor in Adolescent Females
title_sort criterion and concurrent validity of the activpal™ professional physical activity monitor in adolescent females
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477132/
https://www.ncbi.nlm.nih.gov/pubmed/23094069
http://dx.doi.org/10.1371/journal.pone.0047633
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